Can you tell me which need cool fall outside?

[MattWoelfsen]

Hi mimigirl! Most orchids can and do enjoy warm, humid air BUT I'm speaking of orchids that are readily available in big box stores, groceries, home improvement centers. Phalaenopsis, Cattleya, Oncidium are some of my orchids that I have growing outside. These enjoy warm, humid air. I do not think they'll need an interim period going from inside to outside. What I do when I move my plants from inside to outside, I pick a day where inside temps is equal to outside temps. Then I move them, the shock in temperature changes might blast flower buds. Caution should be taken when you are introducing the plants from indoor light to outside light. That change in light can cause leaf burn.